2

我用gwt-openlayers.
我还没有找到如何显示路线。

是否可以显示路线gwt-openlayers？

4

2 回答 2

4

我设法展示了路线：

KML： 6.646280,49.753730,0.000000 6.646020,49.753230,0.000000 6.645650,49.752700,0.000000 ... 在这种情况下，KML 坐标为字符串。

Vector routeLayer = new Vector("route");

List<Point> pointList = new ArrayList<Point>();
Projection defaultProj = new Projection(DEFAULT_PROJECTION); 
  // DEFAULT_PROJECTION = "EPSG:4326"
Projection mapProj = new Projection(mapWidget.getMap().getProjection());
for (String coord : KML.split(" "))
{
  String[] xyz = coord.split(",");
  if (xyz.length == 3)
  {
    Point point = new Point(Double.parseDouble(xyz[0]), Double.parseDouble(xyz[1]));
      // lon,lat 
    point.transform(defaultProj, mapProj);
    pointList.add(point);
  }
}
LineString geometry = new LineString(pointList.toArray(new Point[pointList.size()]));
Style style = new Style();
style.setStrokeColor("#0033ff");
style.setStrokeWidth(5);

routeLayer.addFeature(new VectorFeature(geometry, style));

mapWidget.getMap().addLayer(routeLayer);
于 2012-03-09T11:06:18.320 回答
2

取决于您的路线格式，但如果您有 KML，请使用 GML 层。

于 2012-03-08T13:00:14.160 回答